Multispeed-transmission gearing.



PATENT OFFICE.

ALEXANDER BURKHARDT, OF INDIANAPOLIS, INDIANA.

MULTISPEED-TRANSMISSION GEARING.

Specification of Letters Patent.

Patented Aug. 12,1913.

Application filed November 22. 1912. 'Serial N 0. 732,975.

To all whom it may concern:

Be it known that I, ALEXANDER BURK- IIARDT, a citizen of the UnitedStates, resid-' ing at Indianapolis, in the county of Marion and Stateof Indiana, have invented a new and useful Multispeed iransmissionGearing, of which the following is a specification. reference being hadto the accompanying drawings and to the letters and figures of referencemarked thereon.

This invention relates to a train of gearing and supports therefor thatmay be used in various situations for transmission of power, theinvention having reference more particularly to gearing whereby powermay be transmitted at various speeds.

The object of the invention is to provide improved gearing that shall beso constructed as to be adapted to. be employed either for-increasing ordecreasing speed and which may be so constructed as to be simple andpowerful.

A further object is to provide improved gearing that may be employedeither for converting rotary motion into reciprocatory motion orreciprocatory motion into rotary motion. i I I \Vith the above mentionedand other objects in view, the invention consists in the novel parts andin the arrangement thereof in gearing of the above mentioned character,andin the specific combinations of parts as hereinafter particularlydescribed and further defined in the accompanying claims.

Referring to the drawings. Figure 1 is a side elevation of the improvedgearing; Fig 2, a front elevation thereof; Fig. 3, a vertical section'on the line A A in Fig. 2, omitting portions of Fig. 1; Fig. 4, a frontelevation of a retaining ring preferably employed; Fig. 5, a fragmentaryrear elevation; Fig. (3, a front elevation of the frame of the gearing;and Fig. 7, a fragmentary rear elevation of the main wheel partiallybroken away. i I

Like reference characters throughout the drawings, indicate likeelements or features of construction herein referred to. i

The gearing is provided with a suitable supporting frame which may bevariously constructed so as to be adapted to be supported in variouspositions or with respect to various machinery, and for the purpose ofillustration comprises a base 1 adapted to be bolted securely in asuitable position, as upon a floor, and in the present case supports asuitable frame 2 in upright position. The frame has a journal box 3having a cap 4, another journal box 5 having a cap (3, and a box '7, theboxes being in one and the same plane, the plane preferably beingvertical as illustrated but obviously may be horizontal if preferred toso arrange the boxes. The frame comprises alsoa ringlike portion 8extending concentrically about the box 5 and having an external bearingportion 9 for rotatably supporting the main wheel and having also aflange 10 for guiding the wheel, said ring-like portion having boltholes 11 therein. An annular main wheel 12 of novel construction isprovided which has a flange 13 on one side thereof that is bored out toform a suitable bearing portion 14 that is rotatably mounted on thebearing portion 9 and retained thereon by means of a retaining ring 15secured by means of bolts 16 inserted in bolt holes 17 formed in thering, the ring being placed against the front of the ring-like portion8, and in some case has recesses 18 and 19 to clear portions of theboxes 7 and 3 respectively. The flange 13 has an external crowningpulley face 20 adapted to drive a belt. gear teeth 21 thereon in orderto drive or be driven by another gear wheel, and the peripherypreferably has a flange 22 adjacent to the gear teeth, and a crowningpulley face 23 beyond the flange for driving a belt. The wheel isprovided also with internal gear teeth 24 whereby the wheel may drive orbe driven by another wheel. The main wheel 12, as will be seen, is ofannular form and on its front is provided with a suitable cross bar orplate 25 preferably having a counter-weight 26, and preferably isdetachably secured to the wheel, and has a slot 27 therein in which acrank pin 28 is adjustably secured so as to be placed'at differentdistances from the axis of rotation of the wheel, in order that thewheel may be driven by a pitman, or may operate a pitman of a pump, forinstance. and thus convert rotary motion intoreciprocatory motion.

A shaft 29 is rotatabiy mounted in the box 5 and a pinion 30 is securedfixedly to the forward end portion thereof and is The periphery of thewheel 12 has end thereof,

belt if desired. A shaft 34 is rotatably supported in the box 3 and apinion 35 is secured thereto in contact with the forward end of the boxand in mesh withthe pinion 30 and also with the gear teeth 24, a collar36 being secured to the shaft at the opposite end of the box.

Preferably a suitable shaft support 37 is employed which rotatablysupports the rearward portion of the shaft 34, a relatively small pulley38 being preferably secured to the shaft for driving a belt if desired.A stub shaft39 is supported inthe bearing 7 and preferably fixed thereinand it rotatably supports a pinion 40 at the forward the. pinion beingin mesh with the pinion 30 and also with the gear teeth 24. It will beseen that whethenthe shaft 29 drives the main wheel 12, or the wheeldrives the shaft, the strains are equalized on opposite sides of theshaft. It is obvious, however, that in small sizes of the gearing thetransmission of motion may be effected between the shaft 29 and themain.-

wheel 12 by either pinion 35 or 40.

In practical use, the initial motion may be given to the shaft 29 andtransmitted through the main wheel 12 from two pulleys or one toothedgear wheel as rotary motion or by means of the crank pin 28 to impartreciprocating motion. Or, in some cases a reciprocating engine mayimpart motion by means of the crank pin 28 to the main wheel 12 andthence to the shafts 29 and 34: which may drive or transmit the motionby means of wheels thereon, and motion may be transmitted-to machineryalso by the main wheel 12 as will be obvious.

.Having thus described the invention, what is claimed as new is 1.Gearing including a rotatable annular main wheel having a crank-pin andalso internal gear teeth and external gear teeth, a rotatable shaft, andgearing connecting the shaft with the internal gear teeth of the mainwheel.

2. Gearing including a rotatable annular portions of different diameteron its periphery.

3. Gearing including a rotatable annulan main wheel having internal gearteeth and also two external pulley faces differing in diameter, arotatable shaft, and gearing con necting ,the shaft with the internalgear teeth of the main wheel.

- ported by 1. Gearing including a frame having an annular bearing, anannular main wheel having a flange rotatably mounted on the bearing, thewheel having also internal gear teeth, a shaft rotatably mounted in theframe, and a pinion fixed to the shaft in mesh with the internal gearteeth.

5. Gearing including a frame having an annular bearing, an annular mainwheel having a flange rotatably. mounted on the bearing, the fiangehaving .an external pulley face, the wheel having internal gear teeth,and a pinion rotatably supported by the frame in mesh with the internalgear teeth. Y

6. Gearing including a'frame having two journal boxes and also anannular bearing extending about the two boxes, an annular main wheelrotatably lnounted on the an nular bearing and having internal gearteeth, two shafts rotatably mounted in the two journal boxes, and twopinions secured respectively tothe two shafts and meshing each with theother, one of the pinions being in mesh with the internal gear teeth.

.7. Gearing including a frame having a journal box and also an annularbearing extending concentrically about the box, an annular main wheelrotatably mounted on the bearing and having internal gear teeth and alsoa crank-pin, a shaft rotatably mounted in the journal box, a pinionfixedly secured tothe shaft, and a pinion rotatably supthe frame in meshwith the internal gear teeth and the first mentioned pinion.

8. In transmission gearing, the combination with a frame having threeboxes in one and the same plane, of an annular main wheel rotatablymounted on the frame and having internal gear teeth, a shaft rotatablymounted in the middle one of the boxes and having a pinion thereon, ashaft rotatably mounted in another one of the boxes and having a pinionthereon in mesh withthe internal ear teeth and also with the firstmentione pinion, a stub shaft fixed in the remaining one of the boxes,and a pinion rotatable on the stub shaft in mesh with the internal gearteeth and also with the first mentione pinion.

9. In transmission gearing, the combination of a frame having twojournal boxes and a bearing box in one and the same lane, the framehaving also an annular caring extending about all the boxes, an annularmain wheel having a flange rotatably mounted on the annular bearing andhavm also internal gear teeth, a stub shaft fixed 111 the bearing box,two shafts rotatably mounted in the two journal boxes "re spectively,two supports rotatably supporting portions of the two rotatable shaftsrespectively, two transmission wheels, secured to the two rotatableshafts respectively, a pinion rotatably mounted on the stub shaft inmesh with the internal gear teeth, and two inions fixedly secured to thetwo rotatable's afts in mesh each with the other, one-0f the two pinionsbeing in mesh with the internal gear teeth and the other in mesh withthe first mentioned pinion.

In testimony whereof, I afiix my signature in presenee of two witnesses.

ALEXANDER BURKHARDT.

Witnesses:

E.- T. SILvIUs, P. A. HAVELICK.

